Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

For DTC P0483:
- The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.
- The PCM will store the conditions as Freeze Frame/Failure Records data.
- The PCM commands the cooling fan clutch to 100%.
For DTC P0493:
- The Reduced Engine Power indicator illuminates.
- The PCM will store the conditions as Freeze Frame/Failure Records data.